Refine changeset browse behavior

[rails.git] / app / assets / javascripts / index / browse.js

diff --git a/app/assets/javascripts/index/browse.js b/app/assets/javascripts/index/browse.js
index e151a2dc3425027addab144ddbce83eed09753c6..752c84fecee841505b14bc402ce324c9f5cde7d6 100644 (file)
--- a/app/assets/javascripts/index/browse.js
+++ b/app/assets/javascripts/index/browse.js
@@ -1,330 +1,132 @@
-//= require templates/browse/feature
-//= require templates/browse/feature_list
-//= require templates/browse/feature_history
-
-$(document).ready(function () {
-  $("#show_data").click(function (e) {
-    $.ajax({ url: $(this).attr('href'), success: function (sidebarHtml) {
-      startBrowse(sidebarHtml);
-    }});
-    e.preventDefault();
+function initializeBrowse(map) {
+  var browseBounds;
+  var selectedLayer;
+  var dataLayer = map.dataLayer;
+
+  dataLayer.setStyle({
+    way: {
+      weight: 3,
+      color: "#000000",
+      opacity: 0.4
+    },
+    area: {
+      weight: 3,
+      color: "#ff0000"
+    },
+    node: {
+      color: "#00ff00"
+    }

   });
 
   });
 

-  function startBrowse(sidebarHtml) {
-    var browseMode = "auto";
-    var browseBounds;
-    var layersById;
-    var selectedLayer;
-    var browseObjectList;
-    var areasHidden = false;
-
-    var dataLayer = new L.OSM.DataLayer(null, {
-      styles: {
-        way: {
-          weight: 3,
-          color: "#000000",
-          opacity: 0.4
-        },
-        area: {
-          weight: 3,
-          color: "#ff0000"
-        },
-        node: {
-          color: "#00ff00"
-        }
-      }
-    });
-
-    dataLayer.addTo(map);
-
-    dataLayer.isWayArea = function () {
-      return !areasHidden && L.OSM.DataLayer.prototype.isWayArea.apply(this, arguments);
-    };
-
-    var drawHandler = new L.Rectangle.Draw(map, {title: I18n.t('browse.start_rjs.drag_a_box')});
-    map.on('draw:rectangle-created', endDrag);
-
-    $("#sidebar_title").html(I18n.t('browse.start_rjs.data_frame_title'));
-    $("#sidebar_content").html(sidebarHtml);
-
-    openSidebar();
+  dataLayer.isWayArea = function () {
+    return false;
+  };

 
 

-    map.on("moveend", updateData);
-    updateData();
-
-    $("#browse_select_view").click(useMap);
-
-    $("#browse_hide_areas_box").html(I18n.t('browse.start_rjs.hide_areas'));
-    $("#browse_hide_areas_box").toggle(hideAreas, showAreas);
+  dataLayer.on("click", function (e) {
+    onSelect(e.layer);
+  });

 
 

-    function updateData() {
-      if (browseMode == "auto") {
-        if (map.getZoom() >= 15) {
-          useMap();
-        } else {
-          setStatus(I18n.t('browse.start_rjs.zoom_or_select'));
-        }
-      }
+  map.on('layeradd', function (e) {
+    if (e.layer === dataLayer) {
+      map.on("moveend", updateData);
+      updateData();

     }
     }

+  });

 
 

-    $("#sidebar").one("closed", function () {
-      map.removeLayer(dataLayer);
+  map.on('layerremove', function (e) {
+    if (e.layer === dataLayer) {

       map.off("moveend", updateData);
       map.off("moveend", updateData);

-      map.off('draw:rectangle-created', endDrag);
-      drawHandler.disable();
-    });
-
-    $("#browse_select_box").click(function () {
-      $("#browse_select_box").html(I18n.t('browse.start_rjs.drag_a_box'));
-
-      drawHandler.enable();
-
-      return false;
-    });
-
-    function useMap() {
-      var bounds = map.getBounds();
-
-      if (!browseBounds || !browseBounds.contains(bounds)) {
-        browseBounds = bounds;
-        browseMode = "auto";
-
-        getData();
-
-        $("#browse_select_view").hide();
-      }
-
-      return false;
-    }
-
-    function hideAreas() {
-      $("#browse_hide_areas_box").html(I18n.t('browse.start_rjs.show_areas'));
-
-      areasHidden = true;
-
-      getData();
+      $('#browse_status').empty();

     }
     }

+  });

 
 

-    function showAreas() {
-      $("#browse_hide_areas_box").html(I18n.t('browse.start_rjs.hide_areas'));
-
-      areasHidden = false;
-
-      getData();
-    }
+  function updateData() {
+    var bounds = map.getBounds();
+    getData(!browseBounds || !browseBounds.contains(bounds));
+    browseBounds = bounds;
+  }

 
 

-    function endDrag(e) {
-      browseBounds = e.rect.getBounds();
-      browseMode = "manual";
+  function displayFeatureWarning(count, limit, callback) {
+    $('#browse_status').html(
+      $("<p class='warning'></p>")
+        .text(I18n.t("browse.start_rjs.loaded_an_area_with_num_features", { num_features: count, max_features: limit }))
+        .append(
+          $("<input type='submit'>")
+            .val(I18n.t('browse.start_rjs.load_data'))
+            .click(callback)));
+  }

 
 

-      getData();
+  var dataLoader;

 
 

-      $("#browse_select_box").html(I18n.t('browse.start_rjs.manually_select'));
-      $("#browse_select_view").show();
+  function getData(inPrevious) {
+    var bounds = map.getBounds();
+    var size = bounds.getSize();

 
 

-      drawHandler.disable();
+    if (size > OSM.MAX_REQUEST_AREA) {
+      $('#browse_status').html(
+        $("<p class='warning'></p>")
+          .text(I18n.t("browse.start_rjs.unable_to_load_size", { max_bbox_size: OSM.MAX_REQUEST_AREA, bbox_size: size.toFixed(2) })));
+      return;

     }
 
     }
 

-    function displayFeatureWarning(count, limit, callback) {
-      clearStatus();
-
-      var div = document.createElement("div");
-
-      var p = document.createElement("p");
-      p.appendChild(document.createTextNode(I18n.t("browse.start_rjs.loaded_an_area_with_num_features", { num_features: count, max_features: limit })));
-      div.appendChild(p);
+    if (inPrevious) return;

 
 

-      var input = document.createElement("input");
-      input.type = "submit";
-      input.value = I18n.t('browse.start_rjs.load_data');
-      input.onclick = callback;
-      div.appendChild(input);
-
-      $("#browse_content").html("");
-      $("#browse_content").append(div);
-    }
+    var url = "/api/" + OSM.API_VERSION + "/map?bbox=" + bounds.toBBoxString();

 
 

-    function getData() {
-      var size = browseBounds.getSize();
+    /*
+     * Modern browsers are quite happy showing far more than 100 features in
+     * the data browser, so increase the limit to 2000 by default, but keep
+     * it restricted to 500 for IE8 and 100 for older IEs.
+     */
+    var maxFeatures = 2000;

 
 

-      if (size > OSM.MAX_REQUEST_AREA) {
-        setStatus(I18n.t("browse.start_rjs.unable_to_load_size", { max_bbox_size: OSM.MAX_REQUEST_AREA, bbox_size: size }));
-        return;
+    /*@cc_on
+      if (navigator.appVersion < 8) {
+        maxFeatures = 100;
+      } else if (navigator.appVersion < 9) {
+        maxFeatures = 500;

       }
       }

+    @*/

 
 

-      setStatus(I18n.t('browse.start_rjs.loading'));
+    if (dataLoader) dataLoader.abort();

 
 

-      $("#browse_content").empty();
-      dataLayer.clearLayers();
-      selectedLayer = null;
+    dataLoader = $.ajax({
+      url: url,
+      success: function (xml) {
+        dataLayer.clearLayers();
+        selectedLayer = null;

 
 

-      var url = "/api/" + OSM.API_VERSION + "/map?bbox=" + browseBounds.toBBOX();
+        var features = dataLayer.buildFeatures(xml);

 
 

-      /*
-       * Modern browsers are quite happy showing far more than 100 features in
-       * the data browser, so increase the limit to 2000 by default, but keep
-       * it restricted to 500 for IE8 and 100 for older IEs.
-       */
-      var maxFeatures = 2000;
-
-      /*@cc_on
-        if (navigator.appVersion < 8) {
-          maxFeatures = 100;
-        } else if (navigator.appVersion < 9) {
-          maxFeatures = 500;
+        function addFeatures() {
+          $('#browse_status').empty();
+          dataLayer.addData(features);

         }
         }

-      @*/
-
-      $.ajax({
-        url: url,
-        success: function (xml) {
-          clearStatus();
-
-          dataLayer.addData(xml);
-
-          layersById = {};
-          var features = [];
-
-          dataLayer.eachLayer(function (layer) {
-            var feature = layer.feature;
-            layersById[feature.id] = layer;
-            features.push({
-              typeName: featureTypeName(feature),
-              url: "/browse/" + feature.type + "/" + feature.id,
-              name: featureName(feature),
-              id: feature.id
-            });
-          });
-
-          browseObjectList = $(JST["templates/browse/feature_list"]({
-            features: features,
-            url: url
-          }))[0];

 
 

-          loadObjectList();
+        if (features.length < maxFeatures) {
+          addFeatures();
+        } else {
+          displayFeatureWarning(features.length, maxFeatures, addFeatures);

         }
         }

-      });
-    }
-
-    function viewFeatureLink() {
-      var layer = layersById[$(this).data("feature-id")];

 
 

-      onSelect(layer);
-
-      if (browseMode != "auto") {
-        map.panTo(layer.getBounds().getCenter());
+        dataLoader = null;

       }
       }

-
-      return false;
-    }
-
-    function loadObjectList() {
-      $("#browse_content").html(browseObjectList);
-      $("#browse_content").find("a[data-feature-id]").click(viewFeatureLink);
-
-      return false;
-    }
-
-    function onSelect(layer) {
-      // Unselect previously selected feature
-      if (selectedLayer) {
-        selectedLayer.setStyle(selectedLayer.originalStyle);
-      }
-
-      // Redraw in selected style
-      layer.originalStyle = layer.options;
-      layer.setStyle({color: '#0000ff', weight: 8});
-
-      // If the current object is the list, don't innerHTML="", since that could clear it.
-      if ($("#browse_content").firstChild == browseObjectList) {
-        $("#browse_content").removeChild(browseObjectList);
-      } else {
-        $("#browse_content").empty();
-      }
-
-      var feature = layer.feature;
-
-      $("#browse_content").html(JST["templates/browse/feature"]({
-        name: featureNameSelect(feature),
-        url: "/browse/" + feature.type + "/" + feature.id,
-        attributes: feature.tags
-      }));
-
-      $("#browse_content").find("a.browse_show_list").click(loadObjectList);
-      $("#browse_content").find("a.browse_show_history").click(loadHistory);
-
-      // Stash the currently drawn feature
-      selectedLayer = layer;
-    }
-
-    dataLayer.on("click", function (e) {
-      onSelect(e.layer);

     });
     });

+  }

 
 

-    function loadHistory() {
-      $(this).attr("href", "").text(I18n.t('browse.start_rjs.wait'));
-
-      var feature = selectedLayer.feature;
-
-      $.ajax({
-        url: "/api/" + OSM.API_VERSION + "/" + feature.type + "/" + feature.id + "/history",
-        success: function (xml) {
-          if (selectedLayer.feature != feature || $("#browse_content").firstChild == browseObjectList) {
-            return;
-          }
-
-          $(this).remove();
-
-          var history = [];
-          var nodes = xml.getElementsByTagName(feature.type);
-          for (var i = nodes.length - 1; i >= 0; i--) {
-            history.push({
-              user: nodes[i].getAttribute("user") || I18n.t('browse.start_rjs.private_user'),
-              timestamp: nodes[i].getAttribute("timestamp")
-            });
-          }
-
-          $("#browse_content").append(JST["templates/browse/feature_history"]({
-            name: featureNameHistory(feature),
-            url: "/browse/" + feature.type + "/" + feature.id,
-            history: history
-          }));
-        }.bind(this)
-      });
-
-      return false;
-    }
-
-    function featureTypeName(feature) {
-      return I18n.t('browse.start_rjs.object_list.type.' + feature.type);
-    }
-
-    function featureName(feature) {
-      return feature.tags['name:' + $('html').attr('lang')] ||
-        feature.tags.name ||
-        feature.id;
-    }
-
-    function featureNameSelect(feature) {
-      return feature.tags['name:' + $('html').attr('lang')] ||
-        feature.tags.name ||
-        I18n.t("browse.start_rjs.object_list.selected.type." + feature.type, { id: feature.id });
+  function onSelect(layer) {
+    // Unselect previously selected feature
+    if (selectedLayer) {
+      selectedLayer.setStyle(selectedLayer.originalStyle);

     }
 
     }
 

-    function featureNameHistory(feature) {
-      return feature.tags['name:' + $('html').attr('lang')] ||
-        feature.tags.name ||
-        I18n.t("browse.start_rjs.object_list.history.type." + feature.type, { id: feature.id });
-    }
+    // Redraw in selected style
+    layer.originalStyle = layer.options;
+    layer.setStyle({color: '#0000ff', weight: 8});

 
 

-    function setStatus(status) {
-      $("#browse_status").html(status);
-      $("#browse_status").show();
-    }
+    OSM.route('/browse/' + layer.feature.type + '/' + layer.feature.id);

 
 

-    function clearStatus() {
-      $("#browse_status").html("");
-      $("#browse_status").hide();
-    }
+    // Stash the currently drawn feature
+    selectedLayer = layer;

   }
   }

-});
+}